# What's "cap-and-trade"?

*Published:* 2007-02-12
*Author:* Bill Chameides

In [my post last Friday](https://blogs.edf.org/climate411/2007/02/09/global_warming_solutions/ "https://blogs.edf.org/climate411/2007/02/09/global_warming_solutions/"), I mentioned “cap-and-trade” as a good strategy to control greenhouse gas emissions. If you’d like to learn more about cap-and-trade, take a look at a [post I wrote for the Gristmill Blog](http://gristmill.grist.org/story/2007/2/12/102851/837 "http://gristmill.grist.org/story/2007/2/12/102851/837"). It describes what cap-and-trade is, and why it’s a more effective strategy than a federal “carbon tax”.